unit MainFrm;

interface

uses
  SysUtils, Windows, Messages, Classes, Graphics, 
  Controls,Forms, Dialogs, StdCtrls, MPlayer, ExtCtrls;

type
  TMainForm = class(TForm)

    Panel1: TPanel;
    MediaPlayer1: TMediaPlayer;
    OpenDialog1: TOpenDialog;
    
     Button1: TButton;
  
     procedure Button1Click(Sender: TObject);
     procedure MediaPlayer1Notify(Sender: TObject);

  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  MainForm: TMainForm;

implementation

{$R *.DFM}

procedure TMainForm.Button1Click(Sender: TObject);
begin
  if OpenDialog1.Execute then
    with MediaPlayer1 do
    begin
      Filename := OpenDialog1.Filename;
      Open;
      DisplayRect := Rect(0, 0, Panel1.Width, 
                                                         Panel1.Height);
      Notify := True;
    end;
end;

procedure TMainForm.MediaPlayer1Notify(
                                                             Sender: TObject);
begin
   ShowMessage ('Media control method executed');
end;

end.
